Company · Ownership research

Verastem, Inc. VSTM

CIK 0001526119

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Nov 5, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $2.23M

Nov 1, 2023 – Nov 5, 2026
Available records · partial months are marked ·

202610 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 3, 2026	Paterson Dan President and CEO · Director	Sale	$12.47K 1,299 shares sold	0.20% sold Direct holding	▾
Oct 1, 2026	Paterson Dan President and CEO · Director	Sale	$352.97K 44,121 shares sold	6.33% sold Direct holding	▾
Oct 1, 2026	Calkins Daniel Chief Financial Officer	Sale	$20.53K 2,566 shares sold	2.03% sold Direct holding	▾
Sep 21, 2026	Calkins Daniel Chief Financial Officer	Sale	$423.50 55 shares sold	0.05% sold Direct holding	▾
Aug 3, 2026	Paterson Dan President and CEO · Director	Sale	$7.56K 1,302 shares sold	0.22% sold Direct holding	▾
Jun 22, 2026	Paterson Dan President and CEO · Director	Sale	$87.24K 20,871 shares sold	3.41% sold Direct holding	▾
Jun 22, 2026	Calkins Daniel Chief Financial Officer	Sale	$17.09K 4,089 shares sold	3.37% sold Direct holding	▾
May 4, 2026	Paterson Dan President and CEO · Director	Sale	$4.69K 806 shares sold	0.13% sold Direct holding	▾
Feb 4, 2026	Paterson Dan President and CEO · Director	Sale	$6.49K 970 shares sold	0.16% sold Direct holding	▾
Jan 12, 2026	Paterson Dan President and CEO · Director	Sale	$73.90K 10,321 shares sold	2.51% sold Direct holding	▾

Showing 11 / 11 record groups in 2026. The complete set is available through the API.

Verastem, Inc. · VSTM

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 11 of 11 purchase / sale groups and 14 of 14 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"VSTM","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.